Tubing coupler



FIG. 1 is a perspective view taken from the top, front and left side of the tubing coupler showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof.

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a left side elevational view thereof the right side elevational view being the mirror image of the left side elevational view. 

The ornamental design for a tubing coupler, as shown and described. 